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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_ARM | 7 #if V8_TARGET_ARCH_ARM |
8 | 8 |
9 #include "src/arm/simulator-arm.h" | 9 #include "src/arm/simulator-arm.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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752 // Sequential strings have already been ruled out. | 752 // Sequential strings have already been ruled out. |
753 __ tst(result, Operand(kIsIndirectStringMask)); | 753 __ tst(result, Operand(kIsIndirectStringMask)); |
754 __ Assert(eq, kExternalStringExpectedButNotFound); | 754 __ Assert(eq, kExternalStringExpectedButNotFound); |
755 } | 755 } |
756 // Rule out short external strings. | 756 // Rule out short external strings. |
757 STATIC_ASSERT(kShortExternalStringTag != 0); | 757 STATIC_ASSERT(kShortExternalStringTag != 0); |
758 __ tst(result, Operand(kShortExternalStringMask)); | 758 __ tst(result, Operand(kShortExternalStringMask)); |
759 __ b(ne, call_runtime); | 759 __ b(ne, call_runtime); |
760 __ ldr(string, FieldMemOperand(string, ExternalString::kResourceDataOffset)); | 760 __ ldr(string, FieldMemOperand(string, ExternalString::kResourceDataOffset)); |
761 | 761 |
762 Label ascii, done; | 762 Label one_byte, done; |
763 __ bind(&check_encoding); | 763 __ bind(&check_encoding); |
764 STATIC_ASSERT(kTwoByteStringTag == 0); | 764 STATIC_ASSERT(kTwoByteStringTag == 0); |
765 __ tst(result, Operand(kStringEncodingMask)); | 765 __ tst(result, Operand(kStringEncodingMask)); |
766 __ b(ne, &ascii); | 766 __ b(ne, &one_byte); |
767 // Two-byte string. | 767 // Two-byte string. |
768 __ ldrh(result, MemOperand(string, index, LSL, 1)); | 768 __ ldrh(result, MemOperand(string, index, LSL, 1)); |
769 __ jmp(&done); | 769 __ jmp(&done); |
770 __ bind(&ascii); | 770 __ bind(&one_byte); |
771 // Ascii string. | 771 // One-byte string. |
772 __ ldrb(result, MemOperand(string, index)); | 772 __ ldrb(result, MemOperand(string, index)); |
773 __ bind(&done); | 773 __ bind(&done); |
774 } | 774 } |
775 | 775 |
776 | 776 |
777 static MemOperand ExpConstant(int index, Register base) { | 777 static MemOperand ExpConstant(int index, Register base) { |
778 return MemOperand(base, index * kDoubleSize); | 778 return MemOperand(base, index * kDoubleSize); |
779 } | 779 } |
780 | 780 |
781 | 781 |
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928 patcher.masm()->add(r0, pc, Operand(-8)); | 928 patcher.masm()->add(r0, pc, Operand(-8)); |
929 patcher.masm()->ldr(pc, MemOperand(pc, -4)); | 929 patcher.masm()->ldr(pc, MemOperand(pc, -4)); |
930 patcher.masm()->emit_code_stub_address(stub); | 930 patcher.masm()->emit_code_stub_address(stub); |
931 } | 931 } |
932 } | 932 } |
933 | 933 |
934 | 934 |
935 } } // namespace v8::internal | 935 } } // namespace v8::internal |
936 | 936 |
937 #endif // V8_TARGET_ARCH_ARM | 937 #endif // V8_TARGET_ARCH_ARM |
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